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| | Issue Date | Title | Author(s) | Journal |
| 41 | May-2012 | A Reservoir-driven non-stationary hidden markov model | Demiris, Yiannis ; Chatzis, Sotirios P. | Pattern recognition |
| 42 | 5-Mar-2012 | Visual Workflow Recognition Using a Variational Bayesian Treatment of Multistream Fused Hidden Markov Models | Chatzis, Sotirios P. ; Kosmopoulos, Dimitrios I. | IEEE transactions on circuits and systems for video technology |
| 43 | Jan-2012 | The Copula Echo State Network | Chatzis, Sotirios P. ; Demiris, Yiannis | Pattern Recognition |
| 44 | 2012 | A Coupled Indian Buffet Process Model for Collaborative Filtering | Chatzis, Sotirios P. | Journal of Machine Learning Research |
| 45 | Nov-2011 | Numerical optimization using synergetic swarms of foraging bacterial populations | Chatzis, Sotirios P. ; Koukas, Spyros | Expert systems with applications |
| 46 | Sep-2011 | Echo state Gaussian process | Demiris, Yiannis ; Chatzis, Sotirios P. | IEEE transactions on neural networks and learning systems |
| 47 | Aug-2011 | Deformable probability maps: probabilistic shape and appearance-based object segmentation | Chatzis, Sotirios P. ; Tsechpenakis, Gavriil | Computer Vision and Image Understanding |
| 48 | Jul-2011 | A fuzzy c-means-type algorithm for clustering of data with mixed numeric and categorical attributes employing a probabilistic dissimilarity functional | Chatzis, Sotirios P. | Expert systems with applications |
| 49 | Feb-2011 | A variational Bayesian methodology for hidden Markov models utilizing Student's-t mixtures | Chatzis, Sotirios P. ; Kosmopoulos, Dimitrios I. | Pattern recognition |
| 50 | 1-Dec-2010 | A method for training finite mixture models under a fuzzy clustering principle | Chatzis, Sotirios P. | Fuzzy sets and systems |
| 51 | Sep-2010 | Robust visual behavior recognition | Chatzis, Sotirios P. ; Kosmopoulos, Dimitrios I. | IEEE Signal Processing Magazine |
| 52 | Jun-2010 | The infinite hidden Markov random field model | Tsechpenakis, Gabriel ; Chatzis, Sotirios P. | IEEE Transactions on Neural Networks |
| 53 | 2010 | Hidden Markov models with nonelliptically contoured state densities | Chatzis, Sotirios P. | IEEE Transactions on Pattern Analysis and Machine Intelligence |
| 54 | Sep-2009 | Robust Sequential Data Modeling Using an Outlier Tolerant Hidden Markov Model | Chatzis, Sotirios P. ; Kosmopoulos, Dimitrios ; Varvarigou, Theodora | IEEE Transactions on Pattern Analysis and Machine Intelligence |
| 55 | Jun-2009 | Factor analysis latent subspace modeling and robust fuzzy clustering using t-distributions | Chatzis, Sotirios P. ; Varvarigou, Theodora | IEEE Transactions on Fuzzy Systems |
| 56 | Mar-2009 | Vision-based production of personalized video | Chatzis, Sotirios P. ; Kosmopoulos, Dimitrios I. ; Doulamis, Anastasios D. ; Makris, Alexandros ; Doulamis, Nikolaos D. ; Middleton, Stuart E. | Signal Processing: Image Communication |
| 57 | Oct-2008 | Robust fuzzy clustering using mixtures of Student’s-t distributions | Dr Chatzis, Sotirios P. ; Varvarigou, Theodora | Pattern Recognition Letters |
| 58 | Mar-2008 | Signal modeling and classification using a robust latent space model based on t distributions | Chatzis, Sotirios P. ; Kosmopoulos, Dimitrios I. ; Varvarigou, Theodora | IEEE Transactions on Signal Processing |
| 59 | 2008 | A fuzzy clustering approach toward Hidden Markov random field models for enhanced spatially constrained image segmentation | Chatzis, Sotirios P. ; Varvarigou, Theodora | IEEE Transactions on Fuzzy Systems |
| 60 | 2008 | Managing service level agreement contracts in OGSA-based Grids | Chatzis, Sotirios P. ; Litke, Antonios ; Konstanteli, Kleopatra ; Andronikou, Vassiliki ; Varvarigou, Theodora | Future Generation Computer Systems |
